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Meaning of coherer

co•her•er

Pronunciation: (kō-hēr'ur, -her'-), [key]
— n.
  1. a person or thing that coheres.
  2. a device usually used in detecting radio waves, as a tube filled with a conducting substance in granular form, whose electrical resistance increases when struck by radio waves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.